Mortal Sin is an indie roguelite game that combines elements from titles like Dark Messiah, Warhammer: Vermintide, Roboquest, and Hades. It features a visceral landscape filled with gore and a variety of melee weapons, encouraging aggressive gameplay. Players can execute limb-severing combos and must manage weapon durability to survive. The game is currently available for .50 as part of the Prestige Collection XL Bundle from Fanatical, requiring the purchase of two games totaling .99.